What you need to consider when designing parts bent with abcant
In short
Dimensions
- Maximum folding length: 2980 mm
- Maximum thickness of the steel sheet: 10 mm
- Maximum thickness of stainless steel sheet: 8 mm
- Maximum thickness of the aluminum sheet: 6 mm
- Maximum weight of the workpiece for bending: 100 kg
Depending on the material, only certain sizes are possible. Details can be found in our list of materials on our platform.
Technical drawing requirements
Here you will find instructions on how to create your technical drawing
Important instructions
When laser cutting parts from thin sheet metal, we foresee the so-called microbridges between the component and the sheet metal to prevent the parts from tipping over and resulting collisions with the laser head.
When exporting a vector DXF file, some CAD programs use layers or different levels when saving. These can lead to contour changes and cannot be accounted for by the system. We cannot take any responsibility for this.
Depending on the manufacturing process, features such as edge cutting and cut quality may vary.
Depending on the material and manufacturing steps, the raw surface may be greasy or, in the case of steel, even slightly rusty. On untreated surfaces, the inscriptions may still be visible on the components. Since laser cutting is a thermal cutting process, the cutting edge and cutting angle can vary depending on the thickness of the material. If there is a need for special surface requirements for your component, they should be described in the comment.
With the "Remove fallout on one side" option selected, the bottom side of the CAD file is automatically selected.
Tolerances
By default, all parts bent with abcant at LaserMaster.bg are produced in accordance with the tolerances specified in BDS EN ISO 22768-m.
You can find detailed information about tolerances here.
Maximum fold length
In order to guarantee the production of given bent parts, even during their design, the limit dimensions related to the production tools must be taken into account.
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Minimum and maximum bending dimensions
If the bending distance is too short for the required prism, the desired bending cannot be performed. Values may vary depending on component geometry and bend length.
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Minimum bending dimensions
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Maximum bending dimensions
Maximum size when bending: a = 500 mm
Minimum distance to openings
If the holes or recesses are too close to the bend line, they may distort when bent. You need to make sure you provide enough clearance.
The minimum opening distance is identical to the minimum fold length (see above). Dimension "a" from the sketch for the minimum length is equivalent to the minimum distance to the hole.
If the openings or contours must be close to the edge of the bend for construction reasons, you can design additional orvors on the fold (see next section). If you wish, you can select this as an option when ordering. We cannot accept responsibility for distortions related to the design of the bent parts.
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.png "Minimum distance to openings")
Additional openings
If the minimum distance to the holes cannot be met due to construction needs, additional holes can be made. They prevent distortion of the main holes near the bend area. When designing additional openings, the following features must be observed:
- There must be enough material in the bending zone to ensure the stability of the part
- Sharp-edged openings, such as rectangles, are often a source of cracks because the material at the corners is weakened
- The ideal shape for additional openings in the bending area is a rectangle with rounded corners
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Sharp corners and other external contours near the bend line
If the part has sharp corners or other external contours near the edge of the bend, the same rules apply as for the minimum bend length.
From a certain point on, the contour falls below the minimum bending length and the material no longer rests completely on the lower tool (prism). As a result, this area may distort during the bending process or not be fully bent.
Minimum bending radius
- The values listed can vary significantly depending on the instrument used
- Internal bend radii are mainly due to the choice of bending prism, the choice of bending punch has only a minimal influence.
- Internal bend radii may vary depending on material lot, tool condition and part geometry
- Constructed radii need to be designed in the following range.
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Size compensation when unfolding
The length of the unfolded laser-cut part is the sum of the dimensions of the folded part minus the compensation value "v", which can be found in the following table.
To the DIN 6935 expansion calculator
Release in the corners
If a small gap is not left in the pleat needles, the material may tear along the cut. By placing a small distance there is no such danger and your workpiece can be bent correctly.
Tool collision with U-profiles
If the bending distance is too long or the designed U-profile is too narrow, collision with the upper tool or the press bar above it may occur. You can see the dimensions that can be realized with U-shaped profiles from the following graphics.
Technical drawing
Technical drawings in PDF format are required for the details that need to be folded on an abcant. The attached vector CAD file will be used as the cut file, and additional information such as tolerances etc. must be present on the drawing as it cannot be automatically taken into account. In case of discrepancies between the CAD and PDF files, production will be based on the CAD file if possible. The following link provides you with detailed instructions on how to create your technical drawing.
To the technical drawing instructions
